main.js

var fs = require('fs');
var handlebars = require('handlebars');
var image_handler = require('./lib/image_handler');
var kml_extractor = require('./lib/kml_extractor');
var kml_writer = require('./lib/kml_writer');
var path = require('path');
var pngparse = require("pngparse");
var Q = require('q');
var xml2js = require('xml2js');
var $_ = require('underscore');

var src_kml;

function init () {
    if (process.argv.length < 3 || process.argv[2].search(/kml/ig) === -1) {
        console.log('You must supply the path to a KML file to begin.\n\nUsage: node main.js path_to_kml_file\n');
        process.exit(1);
    }
    src_kml = path.resolve(__dirname, process.argv[2]);

    return kml_extractor.parse_file(src_kml);
}

init().then(function (kml_docs) {
    var commands = [];

    kml_extractor.extract_placemarks();
    console.log('converting map');

    $_.each(kml_docs, function (kml_doc) {
        $_.each(kml_doc.get_placemarks(), function (placemark) {
            var src = path.resolve(path.dirname(src_kml), placemark.file);
            var chain = image_handler.pdf_to_png(src)
                .then(image_handler.get_map_image_borders)
                .then(image_handler.cut_map_image)
                .then(image_handler.tile_map_image)
                .then(function (res) {
                    placemark.processed_file_data = res;
                    placemark.create_tile_data();
                    return true;
                });
            commands.push(chain);
        });
    });

    return Q.all(commands);
}).then(function () {
    console.log('all placemarks processed. generating kml file.');
    kml_writer.write('./test_data/test/doc.kml', kml_extractor.get_kml_docs());
}).fail(function (err) {
    throw err;
}).done();